Street-sweeping machine.



L. J. LOCKW OOD.

' STREET SWEEPING MACHINE.

APPLICATION FILED JULY 22, 1914.

awoemtoz COLUMBlA PLANOURAPH ccnwAsmNoToN, D. c

Patented Jul 6,1915.

2 -SHEETSSHEET l.

L. J. LOCKWOOD.

STREET SWEEPING MACHINE. APPLICATION FILED JULY 22, 19714- I I Patented July 6, 1915.

2 SHEETS-SHEET 2.

I Z. J. Laahwoad COLUMBIA PLANOuRAPl-l COUWASHINGTON, n. c.

. the invention. consists in the construction,

LEWIS J. LOGKWOOD, oF'sA-NTA ROSA, cAL'IroR'NI'A.

To all whom it mag concern:

Be itknow-n that LJLEWIS J. Locxwoop, a: citizen of. theUnited States-,residing at Santa Rosa,..in-, the=county ofQSonoma and State l of California, have .inyented new I and useful; Improvementsin Street- Sweeping Machines, of which: the following-isa speci- This-invention relatesto improvements in street sweeping; machines I and: has particular application to-a machine adapted to be con:

nected with a wagon on Wheeled. receptacle anddrawnalongthereby; Y

In carrying; out the-present invention, it is my: purpose-to. provide a. street sweeping machine whichmay be readily and quickly may be rapidlyconnectedwith and detached" from the wagon orv other vehicle. I

, Withthe above andother objectsinview,

combination and arrangement of parts hereinafter set forth: in and falling within the" scope of the claim.

,In.the accompanying drawings: Figural; is aview inside elevation-of a street sweeping, machineand wheeled vehicle connected together. Fig. 2 is a longitudmal sectional view through the machine. Fig. 3 isa-trans:

verse sectional view therethroughr Referring, now to the drawingsin detail,:1

designates a frame comprising longitudinal v bars2, 2. spaced apart inv parallelism. Ar ranged transversely of the bars 2, of the frame approximately centrally thereof and secured thereto is an: axle 3, and rotatablymounted. upon the opposite extremities of the axle, 8are ground wheels ht- The bars 2,2 at one side of. the axle 3.incline downwardly and journaled in the lower ends of the downwardly inclinedgportions of the bars 'is a shaft 5 upon whichare keyed sprocket wheels 6,.6 spaced apart. 'lheremaining portions of. the bars 2,2 extend upwardly from; the axle and journaled. in the sTREEr-swEE PINe MACHINE.

Specification of Letters Patent.

upper ends thereof is a shaft 7 carrying sprocket wheels 8,,8 spaced apart. Over the sprocket wheels 6-and,-8 are trained endless chains. 9 spacedi apart and traveling, in ..parallel paths- Suitably" fastened to the. outer edges of the chains 9 and extendingacross the same are brushes 10 spaced apart appropriate distances. Fastened to. the'longitudie nalbars 2, 2zof'thefra-me at; one side of the axle 3 are-vertically disposed bars 11. and 3ournaled in the lower ends of the; bars 11 areaxially alining;trunnions carried by the opposite ends of. af'roller 12,..while journaled in the. upper ends of the; bars *11 are the trunnions. at the opposite ends of aroller 13. The rollers 12 and 13 bear against the lower and upper runs, of'the chains; andi. so hold the-.l-atter'taut, .while thelower roller 12.. cooperateswith the sprocketwheels 6'in suchmanner as tohold-thoseportions of the lower runs ofthe. chains between; the roller I I ratenteaauiye, .1915. j Application filedtil'ulyfl 1914. Serial No.852,437'. i

12 andthe sprocket wheelsB-im a substan-v i tially horizontal planewhereby the brushes 10,. carried such horizontal. portions of thechainswill contact with and sweep over tlle surface of the roadwav being cleaned. I

e In. the present'instance, thedrivinginech anism for thechains 9 carrying the brushes comprises. a gear-. wheel 14 loosely "surrounde lng-thefaxle and" meshing. with a pi nion .15 rotatably mounted upona stub shaft 16 carried by the adiacenti side bar 2 of the frame.

Alsosurrounding the stub shaft 16 and fixed to thepiniomthereon. is asprocket wheel 17, whilekeyed to. the shaft 5 journaled in the lowerendsyof the.sidebarsfof the frame is sprocket wheelw18 and trained. over. the sprocket wheels 17 and 18 is. an endless drive chain 19.. gKeyed to the axle 3 adjacent to one faceof the gear wheel 1 L is:a ratchet wheel .and engaging the teeth of the ratchet wheel is aa pawl carried by the gear wheel I 14, aslclearly' illustrated in Fig. 2,- Whereby motion will be transmitted to the gear wheel. 14: in the forward movement of the machine while the ground wheels will..ro-,

tate idly in the reverse movement of the machine. Thus,.in the forward movement of the machine, the gear wheel 14 drives.

the pinion 16 and. sprocket'wheel'l'i and the. latter, through the medium. of the chain 19, rotates the shaft. 5, thereby impartingmotion tothe belts 9 with theeffect to. cause the brushes lflto contact with the surface of the roadway-over which the machineistraveling. Eastened to the side bars v 2 of the supporting frame are the side walls of a casing 20 inclosing the chains and brushes and the driving mechanism and having the side walls thereof formed with alining openings through which the axle is passed. The lower edges of the side walls of the casing 20 are cut to conform to the path of movement of the lower runs of the chains 9 and lie in a plane below and parallel with such paths. Fastened to the upwardly inclined portions of the lower edges of the side walls of the casing 20 and arranged transversely thereof is a dust pan 21 having the lower end thereof disposed below the forward end of the horizontal portions of the lower runs of the chains 9 and the upper extremity terminating in a downwardly projecting discharge spout 22 formed by the forward end of the casing 20. The dust pan 21 lies in a plane parallel with the upwardly inclined portions of -the lower runs of the chains 9 and in the travel of the chains the brushes thereon ride upon and over the dust pan 21 and carry the dirt and refuse over such pan and into the spout 22.

Loosely connected with the outer ends of the axle 3 and extending forwardly of the machine are connecting bars 23 disposed parallel with each other and having the forward ends thereof interconnected by means of an end bar 24 equipped with a coupling member 25. In practice, the coupling member 25 is secured to the rear end of a wagon or wheeled receptacle and the spout 22 disposed over the body of such receptacle and in communication therewith, and surrounding the lower end of the spout 22 and secured to the top or cover of the body of the wagon is a cloth hood 26 whereby the escape of dust and dirt is prevented. By means of this construction, it will be seen that as the wagon is drawn along over the surface of the roadway, in a forward direction the sweeping machine will follow such wagon and in the rotation of the ground wheels a the gear wheel 14 and pinion 15 will rotate the sprocket wheel 17 to impart movement to the chain 19 and shaft 5 whereby the endless chains 9 carrying the brushes 10 will be actuated to cause the brushes to wipe over the surface of the road and carry the dirt and refuse therefrom onto the dust pan 21 and discharge the same into the spout 22 whence it drops into the body of the wagon, as clearly illustrated in Fig. 2 of the drawings.

In order to reinforce the brushes 10 so as to prevent lateral movement thereof when contacting with the road surface, the reinforcing rods 27 are secured to the rear edges of the backs of the brushes and extend rearwardly therefrom, such rods bearing against bars 28 secured to the chains 9 and arranged transversely thereof.

29 designates a rod having one end thereof pivotally connected with one of the side bars 2 adjacent to the forward end thereof and depending therefrom. iihe lower end of this rod 29 is passed through and works within a slot 30 formed in the adjacent connecting bar 23 and pivoted adjacent to the lower end of the rod 29 is a hand lever 31 capable of swinging movement and having one end thereof pivotally connected with the lower extremity of the rod 29 and the opposite end connected through the medium of an actuating rod with a controlling lever located within convenient reach of the operator 32. Encircling the rod 29 is a coiled contractile spring 38 having one end secured to the rod 29 and the opposite extremity fastened upon the upper edge of the connecting bar 23. Normally, the spring 33 acting upon the rod 29 holds the brushes in engagement with the ground so that as the machine is drawn along dirt and refuse will be deposited within the wagon, while when the lever 31 is swung about its pivotal connection with the connecting bar 23 the rod 29 moves downwardly, incident to the pivotal connection between such rod and the lower end of the lever, thereby moving the brushes out of engagement with the ground.

From the foregoing description taken in connection with the accompanying drawings, the construction, mode of operation and manner of employing my improved street sweeping machine will be readily apparent. It will be seen that I have provided a street sweeping machine which may be coupled to the back of a wagon and whereby the dirt and refuse will be swept up and delivered to the wagon or receptacle so that the same may be carted away.

While I have herein shown and described one preferred form of my invention by way of illustration, I wish it to be understood that I do not limit or confine myself to the precise details of construction herein described and delineated, as modification and variation may be made within the scope of the claim without departing from the spirit of the invention.

I claim:

A two wheeled street sweeping machine comprising an axle, ground wheels on the ends of said axle, a frame mounted on said axle and capable of swinging movement thereon, brushes carried by said frame, means for operating said brushes, connecting bars secured to said axle and projecting forwardly thereof, one of said bars having a slot formed therein, a vertical rod having the upper end thereof pivotally connected to said frame above the connecting bar and the lower end projecting through the slot in said connecting bar, a lever pivoted adjacent to its lower end upon said connecting bar, a pivotal connection between the lower end of said lever and the adjacent end of said rod, means for swinging said lever to the frame vnormally in position to engage draw said rod downwardly and swing said the brushes with the ground. a v frame about the axle to move the brushes In testimony whereof I aflix my signature out of engagement with the ground, and a in presence of two Witnesses. spring encircling said rod above said connecting bar and having the upper end Witnesses: thereof connected to saidrod and the lower CHARLES F. LOCKWOOD,

end abutting said bar and acting to hold CHARL S MAJORY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents; a Washington, 1) .0.

LEWIS J. LooKWoo 

